HOW WILL PERFORMANCE FINISHES AFFECT OTHER FABRIC PROPERTIES VIS A VIS SHADE, HANDLE AND ODOUR?
Finishes can affect various other features required of a textile material due to their own inherent properties /characteristics and or the conditions required for imparting the finish. . It is a known phenomenon that some of the Cationic finishes (Softeners) and cross-linking resins tend to change the shade. These finishing agents may act as mild solvents for the dye (however sparingly) and hence shift the wavelength of absorption of light, even marginally to alter the tonal colour perception. The pH also could play a subtle role in altering the conjugated double bond hybrid resonance in certain colours, contributing to a change in colour perception. Cationic fixing agents generally change the tone of certain colours. Protonation could be one of the reasons. Finishes requiring higher temperatures for fixation (curing) can cause certain changes in shades. Thermo migration and sublimation can occur depending on the nature of the finishing chemical and or the higher temperatures. Thermo m
